F(Psi_2^a,\Psi_2) with etagap > 0.0 in centralities 0-5%, 10-20% and 30-40%

Scope: PWG
PWG-CF (Flow and Correlations)
5.02 TeV
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Figure Caption

The flow angle decorrelation F(\Psi_2^a,\Psi_2) with |\Delta\eta| > 0.0 in Pb-Pb collisions at \sqrt{s_{NN}} = 5.02 TeV 

Detail description

Keywords: Flow, Flow vector fluctuations, Flow angle fluctuations, pT-dependent flow vector fluctuations, Pb-Pb collisions, 5.02 TeV

Using 4-particle correlations it is possible to probe the flow angle fluctuations separated from the flow magnitude fluctuations. The two effects are both presents when probing flow vector fluctuations with 2-particle correlations such as with v2{2}/v[2]

Data sample: LHC15o

Events cuts: kInt7 trigger,  |Vz| < 10cm, V0M centrality estimator, Pileup cut, 

Track cuts: Filterbit 96, No. of TPC cluster > 70, NUA weights, Reference pT [0.2,5.0], |eta| < 0.8